An electron gun with a two-dimensional array of advanced field emission cold cathodes

摘要

The field emission cold cathode structure includes an insulating layer having a two-dimensional array of cavities, a gate electrode having a two-dimensional array of openings disposed on the insulating layer and generally circular and positioned in a cavity, Wherein the pointed portion of the field emission cold cathodes is arranged to deviate from the center by a certain distance from the center of the openings in a horizontal direction toward a reference point disposed on the gate electrode And the distance of the pointed portions from the center of the openings increases from the reference point in accordance with the increase of the distance of the field emission cold cathodes so that the distance from the center point to the concentration point located in the constellation extending from the reference point in the direction perpendicular to the surface of the gate electrode The field emission cold cathodes The emitted electron beam is deflected from the pointed part.